Carl Cowen park in Farragut, it is on Fort Loudon, so I would not suggest eating what you catch! We have plenty of wadable waters, especially on the Clinch River. I am most familiar with it. In the Solway area, between West Knox and Oak Ridge, the Clinch River turns into Melton Lake before reach the other dam. There are quiet a few free boat launches as well as two piers, that I can currently think of. One in Solway, the other in Clinton.
I, as well as some of my fishing buddies, would be happy to take a new comer out. I ain't hard core, because my wife won't let me spend the money, but I love to go and I enjoy being out on the water.
If you are interested when you get here, message me.